It's kinda funny that my first thought after I saw that was "it's like Jim Groat and RH Junior had a baby that made a comic", but when I looked at the title of it, "New Atheist In The Park", well...
It's just like Groat's style in WCOTP: the rambling monologue of the antagonist, the meek interjections of the mild, down-to-earth guy, and even the donkey ears of the characters. Even the t-shirt of the goofy character has a stereotypical catch-phrase on it like Groat has quite often in his comic.
Maybe it's just a coincidence...